Handle out of memory situation in efi_mem_carve_out().
Fixes: 5d00995c361c ("efi_loader: Implement memory allocation and map") Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- lib/efi_loader/efi_memory.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c index e2ca78d935..c47a0dc219 100644 --- a/lib/efi_loader/efi_memory.c +++ b/lib/efi_loader/efi_memory.c @@ -34,6 +34,7 @@ struct efi_mem_list { #define EFI_CARVE_NO_OVERLAP -1 #define EFI_CARVE_LOOP_AGAIN -2 #define EFI_CARVE_OVERLAPS_NONRAM -3 +#define EFI_CARVE_OUT_OF_RESOURCES -4
/* This list contains all memory map items */ static LIST_HEAD(efi_mem); @@ -239,6 +240,8 @@ static s64 efi_mem_carve_out(struct efi_mem_list *map,
/* Create a new map from [ carve_start ... map_end ] */ newmap = calloc(1, sizeof(*newmap)); + if (!newmap) + return EFI_CARVE_OUT_OF_RESOURCES; newmap->desc = map->desc; newmap->desc.physical_start = carve_start; newmap->desc.virtual_start = carve_start; @@ -311,6 +314,8 @@ static efi_status_t efi_add_memory_map_pg(u64 start, u64 pages, r = efi_mem_carve_out(lmem, &newlist->desc, overlap_only_ram); switch (r) { + case EFI_CARVE_OUT_OF_RESOURCES: + return EFI_OUT_OF_RESOURCES; case EFI_CARVE_OVERLAPS_NONRAM: /* * The user requested to only have RAM overlaps,